#define _CRT_SECURE_NO_WARNINGS 1
#include <cmath>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include<math.h>
#include<stdlib.h>
#include<stdio.h>
using namespace std;

class Solution {
public:
    int findPeakElement(vector<int>& nums) {
        int left = 0, right = nums.size() - 1;
        int len = nums.size();
        while (left < right)
        {
            int mid = left + (right - left) / 2;
            if (mid + 1 >= len || nums[mid] > nums[mid + 1]) right = mid;
            else if (nums[mid] < nums[mid + 1]) left = mid + 1;
        }
        return left;
    }
};

int main()
{
    return 0;
}